Siemens SENTRON 5SY5 MCB, 2-pole, 6 A, B characteristic, 400 V AC, 6 kA 5SY5206-6

Protect your electrical circuits from overload and short-circuit with the Siemens SENTRON 5SY5 miniature circuit breaker. This 2-pole MCB with B tripping characteristic and 6 A rated current is designed for reliable protection in residential and commercial installations.

Who is it for

Electricians, panel builders, and maintenance professionals who need a dependable circuit breaker for DIN rail mounting. Suitable for protecting lighting and socket circuits with moderate inrush currents.

Main features

• 2-pole design for simultaneous disconnection of phase and neutral
• B tripping characteristic: magnetic trip between 3 and 5 times rated current
• Rated current 6 A, rated voltage 400 V AC
• Short-circuit breaking capacity 6 kA (Icn) for safe interruption of fault currents
• Energy limitation class 3 reduces let-through energy
• Screw terminals accept solid conductors 0.75–35 mm² and stranded 0.75–25 mm²
• Wide operating temperature range: -25 °C to +45 °C
• Mechanical and electrical service life of 10,000 switching cycles

Specifications

• Product type: Miniature circuit breaker (MCB)
• Series: SENTRON 5SY5
• Number of poles: 2
• Tripping characteristic: B
• Rated current (In): 6 A
• Rated voltage (Ue): 400 V AC
• Rated frequency: 50/60 Hz
• Rated short-circuit breaking capacity (Icn): 6 kA
• Energy limitation class: 3
• Mounting type: DIN rail (EN 60715)
• Degree of protection: IP20 (terminals), IP40 (with enclosure)
• Mechanical service life: 10000 switching cycles
• Electrical service life: 10000 switching cycles
• Pollution degree: 3
• Overvoltage category: III
• Insulation voltage (Ui): 440 V
• Ambient operating temperature: -25 to +45 °C
• Terminal type: Screw terminals
• Terminal capacity (solid): 0.75 ... 35 mm²
• Terminal capacity (stranded): 0.75 ... 25 mm²

Tips

Ensure the breaker is installed in a suitable distribution board with proper DIN rail. For circuits with high inrush currents (e.g., motors, transformers), consider a C or D characteristic breaker. Always verify the short-circuit current at the installation point does not exceed 6 kA.